事务 mysql redis

mysql 事务

start transaction;

update ...

insert ...

create table的不行

rollback;//回滚

commit;//提交

redis 事务

multi

incrby age 1 //age+1

decrby age 2 //age-2

discard //取消执行 (discard 丢弃)

exec //执行

-----------------------

watch keyName1 keyName2 keyName3 ...

multi

incrby age 1 //age+1

decrby age 2 //age-2

exec //keyName1 keyName2 keyName3 ... 有变动执行不成功.

unwatch 取消watch